Improvement in machines for filling sewing-machine bobbins



G. GOWING.

M ach i ne for Filling Sewing- Machine Bobbi ns.

Patented Oct. 11,1875.

immssm iii NJETERS, PHDTO-LITHOGRAPHER, wnsnmmon. D. a

vented a new and useful standards whichv carry and holding-pins; and,third, in the combina- NITED' STATES 'rET OFFICE.

GEORGE eowme, OF SAN FRANCISCO, GALIFORNIA.

Specification forming part of Letters Patent No. 168,634, dated October11, 1875 application filed June 22, 1875,

Be it known that I,

GEORGE Gownve, of San Francisco,

.State of California, have in- Machine for Filling Sewing-MachineBobbins, Ofi'WlllOll the following is a specification:

The object of my invention is the production of an automatic machine forfilling two or more sewing-machine bobbins at the same time; and itconsists, first, in the combination .of the device for operating theguide-bar;

second, in the combination of the peculiar the driving-spindles tion ofthe various operative parts, all as more fully hereinafter explained.

In order to describe more clearly the construction and operation of mymachine, reference is bad to the accompanying drawing,

in which- Figure 1 is a front elevation of the machine; Fig. 2, a topview, with the back part of the table broken off; and Fig. 3, a view ofthe cam-plate and slide in detail.

The table or platform A of the machine has bearings B beneath it for thedriving-shaft O, that gives motion to the bobbin-spindles, and to thecam-plate actuating the bar K. This shaft also carries the broad groovedpulley D and the small pulley E. The upper part of the table supportsthe vertical standards F,

F and the guides G G for the cam-slide and its plate. It has also apost, I, to hold the spool-pins at the back of the machine. The groovedpulleyHprojects through an opening in the table, and is driven by a beltfrom the pulley E. This wheel gives a reciprocating movement, up anddown, to the cam-slide L through the medium of the. crank-pin h and theconnecting-hart, attached to the lower end of the slide L, at 70, andthis motion is transmitted to the guide-bar K, that moves horizontallyback and forth in slots in the standard G and the post f by means of thecamgroove in the plate M, and the pin or roller m, projecting from theend of the guide-bar K, and working in the groove. one or morethread-guides, 6, arranged in line with the bobbins, to which theydeliver the thread, one above the other, and its reciprocation by theaction of the cam-plate L causes This bar carries the guides to lay thethread upon each bobbin in an even and regular manner between the headsof the bobbin. But in order to have the guides deliver the threaduniformly over all portions of the bobbin, and more particularly at theends, the motion of the bar K is changed and accelerated at each end ofits movement, when the guides e approach the heads of the bobbins, andthe motion of the guides c at these points over the bobbins is fasterthan in the center. This action of the guide-bar K causes aless amountof thread to be delivered by the guides at each end of the bobbin thanat any other points between, as the guides move faster over them. The

means for producing this difference in the motion of the bar K consistin the grooved camslide and its plate M, with an inclined groove curvedin both directions, somewhat like an elongated letter S, but with itsupper and lower ends more curved than the other parts, by which themotion of the pin m upon the end of the bar K is accelerated as itreaches the ends of the slot or groove. The spindles d d, for holdingand rotating the bobbins, are supported by the brackets c c, secured tothe side of the standard F. They are provided at'one end with acup-center, and at the other end with a hole and driving-pin, a, toenable the machine to receive bobbins of different make, used in theseveral kinds of sewingmachines, and when it is desired to change theend to accommodate the shape of the bobbin to be filled, the set-screwholding the spindle-bracket to the standard F is loosened and thespindle reversed by turning the bracket around, to bring the requiredendinto position in line with the bobbin and the holding'pin I).

These spindles are arranged one above the other, as many as may berequired, according to the capacity of the machine, and they are drivenfrom the large pulley D by the belts and the small pulley 9 upon eachspindle, one spindle being placed vertically over, and a short distanceto one side of the next one below it, in order to allow them to berotated by one main pulley. By this arrangement the machine may beconstructed to receive and fill more than two bobbins, by extendingtheheight of the supporting-standards F F, and adding the requirednumber of spindles d and holding-pins b, the driving-pulley D being madewider to receive the belts of the spindlepulleys.

The holding-pins b act to support the ends of the bobbins opposite tothe spindles d, and to press and keep them against the spindles. Theyare provided with springs, to cause them to press properly against thebobbins, and

-their ends. are made with holes and depres- SlOIlS of proper size toreceive the ends or heads of different kinds of bobbins, after the samemanner of the driving-spindles, they bethe pins 1) made greater orless.

The extent of motion of the thread-guides e e is regulated by changingtheinclination of the cam groove of the plate M .toward or from theperpendicular, and thus giving more or less movement to the bar K. Thisadjustment is eifected by having the upper end of the plate M pivoted tothe slide L, and using a thumbscrew, 0, Fig.3, working through a curvedslot in the slide L, to hold the ,plate in position at the properinclination.

As thus constructed and arranged, my machine operates to fill bobbinsautomatically, in the following manner: The spindles d d and pins 12 areset to. present the proper ends to the bobbins to be held by them, andthe space between them is adjusted to the length of the bobbin bysetting up the standard F and holding .it by the set-screws n n. Thebobbins to be filled are placed in the machine, and the spools fromwhich the thread is taken are put on the spool-pins projecting from thepost I,

the thread is passed through the eyes in the ends of the thread-guides ee, and the end led by the operator to the bobbin to be filled, and whenthe extent of motion of the bar K is adjusted to the length of thebobbins, the machine is put in operation by giving motion to thedriving-shaft O.

It thus operates to fill bobbins of all the different sewing-machines,with no other attention on the part of the operator than to lead the endot the thread around the bobbin in starting the machine, and to removethe filled ones and replace them by those to be filled.

Having thus fully described my invention, and the manner of operatingit, what I claim therein as new, and desire to secure by Letters Patent,is

1. In a bobbin-winding machine, the combination, with the reciprocatingplate L, of the adjustable cam M and reciprocating bar K, substantiallyas described and shown.

2. In a bobbin-winding machine, the combi-' nation of the standard F,carrying the bobbin holding and driving spindles, with the adj ustablestandard F, carrying the spring holding pins, substantially as describedand shown.

3. In an automatic bobbin-Winding machine having the capacity to receiveand till two or more bobbins at the same time, the combination, with thetable A, of the standards F F, carrying the spindles d and pins 1),arranged as described, the standard Gr, carrying the reciprocatingcam-plate L, and the bar K, reciprocating behind the spindles with anincrease of velocity at each end of its movement, all substantially asdescribed and shown.

In witness whereof I have hereunto set my hand and seal this 28th day ofMay, 1875.

GEORGE GOWING. [L. s.]

Witnesses:

EDWARD E. OSBORN, HENRY G. BLAKE.

